[IPoIB] use spin_trylock_irqsave()

Use spin_trylock_irqsave() in ipoib_start_xmit() instead of
reinventing it out of local_irq_save(), spin_trylock() and
local_irq_restore().

Signed-off-by: Roland Dreier <rolandd@cisco.com>

1 files changed, 1 insertions, 4 deletions

diff --git a/drivers/infiniband/ulp/ipoib/ipoib_main.c b/drivers/infiniband/ulp/ipoib/ipoib_main.c
index cd4f42328db..273d5f418a6 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_main.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_main.c
@@ -551,11 +551,8 @@ static int ipoib_start_xmit(struct sk_buff *skb, struct net_device *dev)
         struct ipoib_neigh *neigh;
         unsigned long flags;
 
-        local_irq_save(flags);
-        if (!spin_trylock(&priv->tx_lock)) {
-                local_irq_restore(flags);
+        if (!spin_trylock_irqsave(&priv->tx_lock, flags))
                 return NETDEV_TX_LOCKED;
-        }
 
         /*
          * Check if our queue is stopped.  Since we have the LLTX bit